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Diamond (Photo) [abbr. Dia ]

Year of discovery: AD 16 (���E), 2008 (Japan)

Locality list: 2 localities of diamond

• C
• β-[C]

• Class: Carbon Polymorph group
• Class: Native elements
• Insoluble in: HCl
• Magnetism: Diamagnetic
• Fluorescence: UV excitation (Blue, Green, Yellow, Red), Phosphorescence (Blue)
• Electrical: Electrostatic (Rubbed)
• Combustible

• Polymorph: Graphite (Hexagonal, Trigonal), Chaoite (Hexagonal), Lonsdaleite (Hexagonal)

• Color: Colorless, Yellow, Brown, White, Blue
• Streak: Colorless
• Luster: Diamond
• Diaphaneity: Transparent-Opaque

• Habit: Octahedral. {111} Tabular. Dodecahedral, Tetrahedral, Cubic. Surface is frequently rounded.

• Cleavage: Perfect on {111} (4 planes)
• Hardness: 10
• Density: 3.5

• System: Cubic
• Group: m3m, Fd3m
• Lattice: a=3.6

Name: A (deny) - damazein (conquer) which means invincible in Greek.